MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised or potentially malicious websites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous external links suggests an attempt to redirect users to malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://vantaidongsaigon.com/uploads/files/43961045958.pdf In PDF document text
- http://ergo-logo-bamberg.de/userfiles/file/kosozetexekivaniboxotin.pdfIn PDF document text
- http://cathugo.de/res/wysiwyg/file/dugojoboru.pdfIn PDF document text
- http://tubelessons.net/cms_images/file/36120302002.pdfIn PDF document text
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/373e9f2e6d3b12ae0330624a4de7b00c/92283785974.pdfIn PDF document text
- https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/64267ca8c977005046c39955e4361570/koxudav.pdfIn PDF document text
- https://creteotels.gr/FCKeditor/userimages/file/zabejokizoraridebamapa.pdfIn PDF document text
- http://planetamama.ru/files/file/1233354423.pdfIn PDF document text
- http://metrocars.london/survey/userfiles/files/makexovubonu.pdfIn PDF document text
- https://f27szerviz.hu/upload/files/18323978095.pdfIn PDF document text
- http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/71952642625.pdfIn PDF document text
- http://limeitec.com/upfiles/editor/files/44565927348.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/u0so69retptsqacinboqaekeb0/lejewixudoxipo.pdfIn PDF document text
- http://esteticka-stomatologie.cz/files/content/file/65846575142.pdfIn PDF document text
- http://daiichilogistics.com/uploads/news_file/27746350794.pdfIn PDF document text
- https://stillwaiting.org/userfiles/file/lolizuwefarudufuwo.pdfIn PDF document text
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e4db4cdd8---8720323169.pdfIn PDF document text
- https://needlugs.com/userfiles/files/13949415796.pdfIn PDF document text
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160aafc41a1fff---kujikoz.pdfIn PDF document text
- http://topimmigrationlawyer.org/ckfinder/userfiles/files/suvoxawawuzivap.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16119701bf3475---viwud.pdfIn PDF document text
- https://leosservices.com/userfiles/file/pikuzakekanukefojutisapaj.pdfIn PDF document text
- https://esterkins.de/ckfinder/userfiles/files/12509083291.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=vscode+markdown+pdf+chromiumPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b461.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB461 | 17588 bytes |
SHA-256: e93f4ebf54688b48f154f915295ec565c6cad49b482a38b08b0c49d60c0af962 |
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font_01_sfnt_off0000e056.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE056 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f86d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF86D | 10988 bytes |
SHA-256: 5c72108ecfc5b2fed4a0598ca4a3c4889b853f36807d078a091e04823f6b92d4 |
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